Does it really matter where the notes come from??? The examiner will know whether you've learnt and understood the subject, using someone else's notes is a good way of saving a bit of time and being able to get a 'life' that doesn't involve aviation. Also, some people need to do the course quickly to start earning some money again. My advice, beg/borrow/steal any notes you can and get the course done. I studied at a well known ATP school, where most of the tutors were copying from oxford notes, maybe all you 'researchers' should give them a call from your high horse.